Identification of a Novel SNP Associated with Meat Quality in C/EBP${\alpha}$ Gene of Korean Cattle

  • Shin, S.C. (Division of Animal Science and Resources, College of Life Science and Natural Resources Sangji University) ;
  • Kang, M.J. (Department of Animal Science, College of Agriculture and Life Science, Chonnam National University) ;
  • Chung, E.R. (Division of Animal Science and Resources, College of Life Science and Natural Resources Sangji University)
  • Received : 2006.06.20
  • Accepted : 2006.08.22
  • Published : 2007.04.01


CCAAT/enhancer binding protein ${\alpha}$($C/EBP{\alpha}$) plays an important role in lipid deposition and adipocyte differentiation. In order to find genetic markers to improve the meat quality of Korean cattle, the bovine $C/EBP{\alpha}$ gene was chosen as a candidate gene to investigate its association with carcass and meat quality traits in Korean cattle. A single nucleotide polymorphism (SNP) was identified at position 271 (A/C substitution) of coding region in the $C/EBP{\alpha}$ gene. A PCR-RFLP procedure with restriction enzyme SmaI was developed for determining the marker genotypes. The frequencies of alleles C and A and were 0.374 and 0.626, respectively. The genotype frequencies for CC, AC and AA were 12.9, 49.0 and 38.1%, respectively, in Korean cattle population. The frequencies of genotype were in agreement with Hardy-Weinberg equilibrium. Association analysis indicated that the gene-specific SNP marker of $C/EBP{\alpha}$ showed a significant association with marbling score (p<0.05). The animals with AA genotype had higher marbling score than those with the AC or CC genotype. Although further studies are needed to validate our results, the $C/EBP{\alpha}$ gene could be useful as a genetic marker for carcass and meat quality traits in Korean cattle.


Supported by : Rural Development Administration


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